Sterling SDA 1000-5100 specifications Options, Closed-Loop Regeneration, Process Aftercooler

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2-5 Options

Closed-Loop Regeneration

An optional regeneration closed-loop valve and heat exchanger can be used to close the regeneration loop during the cooling portion of the regeneration cycle. If this option is enabled on the dryer, air will be bled to the atmosphere until the heating portion of the regeneration cycle is finished. Then, the regeneration closed loop valve will direct air through a water-cooled heat exchanger and back into the regeneration loop (see Figure 3 and Section 3-6: Connecting Aftercooler/Precooler Cooling Water).

		Figure 3: Closed Loop Regeneration
		Regeneration		Regeneration
		Blower		Blower
	AD600-AD1500		AD600-AD1500
	Dryer Flow Schematic	Dryer Valve	Dryer Flow Schematic	Dryer Valve
	Regeneration Closed Loop	Regeneration	Regeneration Heating is
	Cooling is Activated	Regeneration	Activated
	Cooling is Activated	Filter	Activated	Regeneration
				Filter
		Optional		Optional
		Regeneration		Regeneration
	Regeneration	Closed Loop	Regeneration	Closed Loop
	Regeneration	Cooler	Regeneration	Cooler
	Heaters	Cooler	Heaters	Cooler
	Heaters		Heaters
		Regenerarion		Regeneration
		Exhaust		Regeneration
		Exhaust		Exhaust
				Exhaust
		Optional		Optional
		Regeneration		Regeneration
		Closed Loop		Closed Loop
		Valve		Valve
	Left Desiccant		Left Desiccant

Process Aftercooler

The optional aftercooler cools the moist air returning to the dryer from the drying hopper. The aftercooler can cool the return air from 250ºF to about 150ºF. This maintains the dryer’s efficiency and condenses the unwanted plasticizer from the air stream. The aftercooler requires a cooling water connection (see Figure 4).

Figure 4: Process Aftercooler

Mounting

Brackets

High	Mounting Brackets
Temperature
Gasket
	Cooling Coil

		Cooling Coil	Stainless Steel Cooler
		Pipe Gasket	Stainless Steel Cooler
		Pipe Gasket	Housing
			Housing
Stainless Steel
Cooler Housing			High
Cooling Coil			Temperature
			Gasket
Cooling Coil	Cooling Coil		Cooling Coil
Cover Plate	Cooling Coil		Cover Plate
Cover Plate	Pipe Gasket		Cover Plate
	Pipe Gasket

Large Dehumidifying Dryers

Functional Description

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Contents SDA Large Dehumidifying Dryers With AP0 Controls Unpacking and Inspection Shipping InfoEvent of Shipping Damage If the Shipment is Not CompleteCredit Returns Warranty ReturnsReturns Table of Contents Operation Dryer Identification Serial Number Tag Technical Assistance Safety Symbols Used in this Manual SafetyHow to Use This Manual Wear Safety Glasses and Work Gloves Dryer Safety Tags DescriptionOperator Responsibility ResponsibilityGeneral Responsibility Maintenance Responsibility Reporting a Safety Defect General Description Functional DescriptionModels Covered in This Manual Regeneration Cycle Process/Regeneration CycleSequence of Operation Controller Screen Descriptions Controller DescriptionElectrical Features Standard FeaturesMechanical Features Process Aftercooler OptionsClosed-Loop Regeneration Material Overdrying Protection Recommended Temperature SettingsProcess Air Dust Collector Electrical Options Mechanical OptionsSafety Circuit Standards Safety Devices and InterlocksSafety Device Lock-Outs Fail Safe OperationPage Uncrating the Equipment Mechanical InstallationRigging and Placing Unit Making Electrical ConnectionsChecking Blower Rotation Checking for Proper Blower RotationDryer/Drying Hopper Process Air Connections Making Dryer/Drying Hopper Process Air ConnectionsAftercooler Components & Flow Rates Connecting Aftercooler/Precooler Cooling Water OptionalDrying Hopper Air Trap Using the Drying Hopper Air TrapIndicator Lights SwitchesProcess Air Temperature Controller ControlsLit when Control Output 2 is on. Not used Lit when Control Output 1 is on. The Out1Indicator Name Description Lights in the Operation Indicator Section whenE5CN Operating Parameters Setting the Process Air TemperatureTuned prior to dryer startup Adjustment Level Indicator Name DescriptionON, OFF Entering Operating Parameters to Select ModesOptional Setting the High Dew Point AlarmProcess Air Dew Point Display Watlow Operating Parameters Redundant Safety Controller DisplaySetting the Redundant Safety Controller Manf. setting Operation Auto-Tuning the DryerInitial Start-up Pre-Startup ChecksDryer Operation Procedures Page Material Miser OFF Press + to Enable Alarm Display Messages Shutting Down the Dryer Auto-Tuning the DryerPhotocopy this page for your maintenance records MaintenanceMaintenance Schedule Cleaning or Replacing the Process Air Filters Preventative MaintenanceCalibrating the Dirty Filter Alarm Cleaning or Replacing the Regeneration FilterChecking the Dewpoint Control System Replacing the Desiccant Corrective MaintenanceSymptoms of Worn Out Desiccant Replacing the Process Heater Electric Dryers Desiccant Tower AssemblyReplacing the Regeneration Heater Electric Dryers Process Heater Box AssemblyRegeneration Heater Box Assembly Introduction TroubleshootingBasic Troubleshooting Large Dehumidifying Dryers Troubleshooting Alarm Alarm Description Alarm Effect Code AlarmsAlarm Descriptions Using a Platinum Resistance Thermometer Determining Temperature Controller Errors or Sensor ErrorsUsing a Thermocouple Appendix WarrantyAnnex B Information Technical SpecificationsAftercooler Design Specifications Drawings and Diagrams Optional dryer dust collector Spare Parts List Level 3 Mechanical Components Located on back of Dryer Dryer Identification Serial Number TagParts and Service Department Technical Assistance Service DepartmentParts Department Sales Department